Prepare ExternalPolicyDataUpdater and ResourceCache for blocking pool

chrome/browser/policy/cloud/resource_cache_unittest.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/policy/cloud/resource_cache.h"
 
 #include "base/basictypes.h"
 #include "base/files/scoped_temp_dir.h"
+#include "base/test/test_simple_task_runner.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace policy {
 
 namespace {
 
 const char kKey1[] = "key 1";
 const char kKey2[] = "key 2";
 const char kKey3[] = "key 3";
 const char kSubA[] = "a";
 const char kSubB[] = "bb";
 const char kSubC[] = "ccc";
 const char kSubD[] = "dddd";
 const char kSubE[] = "eeeee";
 
 const char kData0[] = "{ \"key\": \"value\" }";
 const char kData1[] = "{}";
 
 }  // namespace
 
 TEST(ResourceCacheTest, StoreAndLoad) {
   base::ScopedTempDir temp_dir;
   ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
-  ResourceCache cache(temp_dir.path());
+  ResourceCache cache(temp_dir.path(),
+                      make_scoped_refptr(new base::TestSimpleTaskRunner));
 
   // No data initially.
   std::string data;
   EXPECT_FALSE(cache.Load(kKey1, kSubA, &data));
 
   // Store some data and load it.
   EXPECT_TRUE(cache.Store(kKey1, kSubA, kData0));
   EXPECT_TRUE(cache.Load(kKey1, kSubA, &data));
   EXPECT_EQ(kData0, data);
 
@@ skipping 58 matching lines @@
   EXPECT_EQ(0u, contents.size());
 
   // The third key is unaffected.
   cache.LoadAllSubkeys(kKey3, &contents);
   EXPECT_EQ(2u, contents.size());
   EXPECT_EQ(kData0, contents[kSubA]);
   EXPECT_EQ(kData1, contents[kSubB]);
 }
 
 }  // namespace policy